[China Packaging Network News] A high-temperature aging test chamber, also known as a ventilation aging test box, is an essential tool used to evaluate the heat resistance of electrical insulation materials, electronic components, and plastic products through controlled high-temperature exposure. It is also commonly used for gas aging tests. Unlike standard drying ovens, high-temperature aging test chambers require precise operational conditions to ensure both efficiency and safety during testing.
First, regarding the power supply requirements for the high-temperature aging test chamber:
1. Users must install an appropriate air or power switch at the location with sufficient capacity. This switch should be exclusively dedicated to the operation of the device (recommended switch capacity: 32A).
2. The pre-installed power supply should have a total power of at least 2.0 kW.
3. The power supply must meet the specifications of AC 380V ± 10% with a frequency of 50 ± 0.5Hz, using a three-phase five-wire system.
Second, the site conditions for the high-temperature aging test chamber are crucial for safe and effective operation:
1. The area around the test chamber must be free from flammable, explosive, corrosive substances, and dust.
2. There should be enough space for maintenance and access around the chamber.
3. Avoid placing the device in areas with strong electromagnetic interference.
4. Ensure the floor is level and well-ventilated.
5. Keep the area free from strong vibrations.
6. Water supply is required only for hot and humid types of test chambers. In such cases, purified water, distilled water, or deionized water must be used, with a resistivity of at least 500Ω·m.
Third, the environmental conditions for the test chamber are important for consistent performance:
1. The ambient temperature should range between 5°C and +30°C, with an average not exceeding 30°C over 24 hours.
2. The relative humidity should remain below 85% RH.
Finally, when using the high-temperature aging test chamber, it's important to note that opening the door during testing can cause fluctuations in temperature and humidity inside the chamber. Frequent or prolonged door openings, or if the test samples emit moisture vapor, may lead to freezing of the refrigeration system’s heat exchanger, which could impair its functionality. Therefore, it is recommended to minimize door openings during testing to maintain stable conditions and ensure accurate results.
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